Defensive publication

ABSTRACT

A FAST-DRYING PRINTING INK USEFUL IN COMMERCIAL LITHOGRAPHIC PRINTING AND PARTICULARLY USEFUL IN PRINTING FOLDED CARTONS AND THE LIKE. THE INK COMPRISES: (A) A PIGMENT; (B) ABOUT 5-33 PERCENT OF AN ORGANIC ACID HAVING FROM 8-20 CARBON ATOMS AND AT LEAST ONE SET OF CONJUGATED DOUBLE BONDS SUCH AS AN A OR B FORM OF OLEOSTEARIC ACID OR A MIXTURE OF ORGANIC ACIDS SUCH AS CHINA OIL; (C) ABOUT 1.5-20 PERCENT OF A DRYING COMPOSITION SUCH AS A SOLUTION OF COBALT SALTS OF ALIPHATIC ACIDS HAVING FROM 4-40 CARBON ATOMS, PREFERABLY C3-C10 FOR AN OPTIMUM BALANCE OR PROPERTIES AND PARTICULARLY PREFERRED IS A 12 PERCENT SOLUTION OF A COBALT SALT COMPLEX OF A BRANCHED C10 ALIPHATIC ACID; AND (D) UP TO ABOUT 30 PERCENT PLASTICIZER SUCH AS AN ETHER PHTHALATE SELECTED FROM BIS(2-ETHOXYETHYL) PHTHALATE, BIS(2-METHOXYETHYL) PHTHALATE, BUTYL BENZYL PHTHALATE.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Dec.16, 1969, 869 0.G. 687. The abstracts of Defensive Publicationapplications are identified by distinctly numbered series and arearranged chronologically. The heading of each abstract indicates thenumber of pages of specification, including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications are available to the public for inspection andreproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oflice makes no assertion as tothe novelty of the disclosed subject matter. 7

PUBLISHED MAY 4;, 1971 T886,005 PRINTING INKS Leon Edward Wolinski,Buffalo, N.Y., assignor to E. I. du Pont de Nemours and Company,Wilmington, Del. Filed Dec. 17, 1969, Ser. No. 886,032 Int. Cl. C08h9/00; (109d 3/26, 11/06 U.S. Cl. 106-27 No Drawing. 6 PagesSpecification A fast-drying printing ink useful in commerciallithographic printing and particularly useful in printing folded cartonsand the like.

The ink comprises:

(A) a pigment;

(B) about 5-33 percent of an organic acid having from '8-20 carbon atomsand at least one set of conjugated double bonds such as an 0: or ,8 formof oleostearic acid or a mixture of organic acids such as China oil;

(C) about 15-20 percent of a drying composition such as a solution ofcobalt salts of aliphatic acids having from 4-40 carbon atoms,preferably C -C for an optimum balance of properties and particularlypreferred is a 12 percent solution of a cobalt salt complex of abranched C aliphatic acid; and

(D) up to about 30 percent plasticizer such as an ether phthalateselected from bis(2-ethoxyethyl) phthalate, bis(2-methoxyethyl)phthalate, butyl benzyl phthalate,

